Improvement in mills for grinding cane



, 2sh t-sh u,

A. HEDGES. ees' Geil l Paterited Feb. '1, 1859.

j?. Id

Info enter.'

2 Sheets-Sheet 2. I. A.-VHIIDGES.v y

Sugar Mill.

No. 22,802.- Patented- Feb. 1, 1859.2

Invento:

Witnesses.'

NrTn STATns4 ATTNT Trice'.

IsAAC A. Huneus, or CINCINNATI, CHIC.

Specification forming part of Letters Patent No. 'l, dated February l,15559.

To all whom, it may concern.-

Be it known that I, ISAAC A. HEDCIis, 'of the city of Cincinnati, countyof Hamilton, in the State of Ohio, have invented certain new and usefulImprovements in Mills for Grinding and Expressing Cane, and I do herebydeclare that the following is a full and exact description of the same,reference being had to the accompanying drawings and letterings thereon,making a part of this specification.

My improvements consist in surrounding the openings for the roller orcylinder shafts in the upper and lower plates with annular ledges, whichledges are accommodated by corresponding recesses in either end of therollers, `while the faces of the rollers are permitted to extenddownwardly and upwardly externally to the circle of the ledges to thetop and bottom plates. rlhe ledges on the bottom plate serve to stop thecane-juice from reaching and flowingout through the openings for theshafts, retaining the oil also from spreading and mixing with the juice.Theledges on the upper plate serve to prevent the oil from spreadingalong the lower surface of the plate to a point outside thearea of therollers and to a contact with the cane, while the recesses in the upperend of the rollers serve to contain the oil which escapes from the upperjournals, permitting it to be conducted through the tube hereinafterdescribed to the lower journals.

My second improvement consists in providing a regulator and adjuster,being an oblong throat placed longitudinally with and extending theentire length of the rollers, and of a Width just sufticient toaccommodate as much cane as should be permitted to be fed between thecylinders or rollers at one time. The design of this device is also toadjust the cane as it is fed in quantities through it to the mill in avertical array or series of stalks evenly distributed through the entirelength ot' the crushing-rollers, preventing the admission of a quantitysufficient to clog or to endanger the mill, and securing, by an evendistribution of the Cane over the entire length ofthe rollers, theiruniform action and an equal pressure upon all the substance passingthrough them. This regulator or adjuster is used, in connection withatable of suitable height and length, to support the outer ends of thestalks while they are being carried through the regulator to the mill,and in case the quantity presented to the rollers should at `any time byenlargement become greater than can be readily drawn through theregulator some stalks will 'be broken otf, and the amount of cane thusreduced to the proper quantity.-

My third improvement consists in providing tubes for oil, passing downthrough appropriate openings from the recess in the top of the rollersto points of communication with the bearings below, by which the oil,after supplying the upper journals, is conducted to the journals below,and thence is permitted to distribute itself to the gearing, thussecuring, by a convenient and certain process, the means ot' lubricatingthe remote and otherwise almost inaccessible parts oi' the apparatus.

My fourth improvement consists in adapting a pair of corrugatedcylindrical shells or sleeves, so constructed in their internal andexternal dimensions iu reference to the diameters and central distancesof one pair ofthe crushing rollers that they may be conveniently slippedover the latter and retained in place bycorrespondinglugs and recesses.The corrugated surfaces of the cylinder thusprepared match together inclose proximity, and constitute, when thus arranged, a substantial,convenient, and efficient corrugated mill.

To enable persons ofcompetent skill to make and use my invention, Iproceed to describe its entire construction.

Like letters refer to like parts in all the drawings.

Figure l is a perspective view of the mill. Fig. 2 is an elevation. Fig.3 is a vertical section by a plane, dividing the two front rollersthrough their axes. Fig. et is a plan of the top'. Fig. 5 is ahorizontal section. Figs. 6 and 7 are a plan and longitudinal section ofthe corru gated shells to adapt to the mill when required. Figs. 8, 9,and l0 are'views ofthe hopper to be attached to the mill, as described,when used for that purpose. Y

A A A. are rollers of any suitable length or diameter, made of cast-ironand turned.

B is the main shaft.

Gis the flanged center, carrying the sweep.

D is the regulator and adjuster.

F F are the gear-wheels.

G is the spout for conducting off the juice.

H H are the oil-tubes leading from the recesses in the upper ends of therollers, where the waste oil from the upper bearings is collected, andconducting it to the journals and gearing below.

I I I are the legs or standards,inade of heavy timber, to which thelower plate of the mill is securely bolted.

K is the sweep,itted between the lianges of the center and 4secured toit by one or more bolts.

L L are the ledges surrounding the openings in the top and bottomplates, and accommodated by corresponding recesses in thc ends of therollers.

M is the scraper and conductor, by which the partially compressed caneis separated from the right-hand roller and conducted around, so as toenter between the main and the rear rollers. These are keyed somewhatcloser together than the former, and subject the cane to the finalprocess of compressing.

N N N are keys by which the rollers are brought to any requiredvproximity and held in place. The keys act in appropriate openings andagainst the backs of the bearingboxes.

O O O are bolts, by which the top and bottom plates are held together.

I? P I) are bolts by which the mill is secured rmly to the legs orstandards.

Q are the flanges, retaining the juice until it may be conducted offinto vessels by the spout G.

R R R are frame-pieces placed between the top and bottom plates,furnishing a resistance to the action of the bolts 0 0 o and givingstability and stiffness to the mill.

The opening or throat through the regulator and adjuster is made ofcast-iron, which is secured to the main or wooden part by screws. It isalso constructed with an exterior recess at the top and bottom, adaptedto the flanges Q, and the plates of the mill being bolted together, withthe regulator and adjuster in its place, the flanges enter theserecesses and hold it firmly in position.

Vhen the mill-is required to be used for grinding with the corrugatedcylinders, therollers are to be all removed, and two of them clothedwith the corrugated shells. These shells lit perfectly, the lugs bin theends yof the shells falling into corresponding recesses in the ends ofthe rollers. The two rollers are then returned to the mill-the mainroller to position 2 and the other roller to position of roller 3, thethirdl roller being left out. The corrugated shells will then be foundto match together. The hopper is then placed in position over thespout,when, by lugs at top and bottom corresponding toledges Q and similar tothe recesses in the regulator and adjuster, it is held by closing up ofthe top and bottom plates firmly in place.

Having thus fully described my mode of constructing a sugar-mill, which,in its principal features, corresponds with mills for similar purposesin common use, and which features are thereforev not new or patentable,

what I claim as my invention, and desire to secure by Letters Patent,isfl. Surrounding the openings in the top and bottom plates with annularledges L, when employed in connection with rollers having recessescorresponding with them in their top and bottom ends, substantially asdescribed.

2. The regulatorand adjuster, substantially as and for the purposesdescribed.

3. The oil-tubes H when used in connection with a recess containingwaste oil to conduct the same through the rollers to the bearings below.v

4L. The corrugated shells, in combination with the rollers, for thepurpose of readily converting the mill into a corrugated mill,constructed and adapted substantially as set forth.

ISAAC A. HEDGES.

Vitnesscs:

W. H. CLARK, SHELDON SMirH.

